Allow passing channel to "Add Guild Member"

Use Case: DiscordServers.com uses the Add Guild Member endpoint to add users to the server they want to join. Server owners would really appreciate the ability to specify what channel people see when they join the server, without updating the order of channels.

Another acceptable solution would be an RPC url to redirect any open client to the given channel, assuming the user is in the server and can see the channel.

@Aaron, I have 2 discord accounts. I use one as my main account and the 2nd to check what people see when they join my servers Via Disboard or the other bots I use to advertise my Server. Its not a built in setting no but it is something that anyone can do. If you don't want to make another account then have an admin in your server help you.